Why is earth considered a closed system

The slowing of clocks in strongly curved space-time is known as gravitational time dilation.

A gravitational time dilation is a form of time dilation, an actual difference of elapsed time between two events as measured by observers situated at varying distances from a gravitating mass. It occurs because objects with a lot of mass create a strong gravitational field.

The gravitational field is really a curving of space and time. The stronger the gravity, the more spacetime curves, and the slower time itself proceeds.

This form of time dilation is also real, and it's because in Einstein's theory of general relativity, gravity can bend spacetime, and therefore time itself. The closer the clock is to the source of gravitation, the slower time passes; the farther away the clock is from gravity, the faster time will pass.

Hence, the right answer is gravitational time dilation.

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Answer:

500 Newtons

Explanation:

50 kg x 10 m/s squared

Answer:b

Explanation:

The greatest kinetic friction force occurs when the block is dragged along  Sand paper

Kinetic friction is defined as the force of friction that exists between two surfaces in contact as one surface moves over the other.

Many factors affects the magnitude of frictional force and prominent among those factors is the nature of a surface. Rough surface cause a greater frictional force than smooth and highly polished surfaces or smooth surfaces.

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Answer:

70 000 kg•m/s

Explanation:

You can find the momentum multiplying the velocity by the mass:

Momentum = 2000 • 35

Momentum = 70 000

B. Increasing the area of their contact would increase heat transfer between two objects.

Heat transfer occurs due to a temperature difference between two objects in contact with each other.

The rate of heat transfer is proportional to the temperature difference, the thermal conductivity of the materials, and the surface area in contact between the objects.

Therefore, increasing the area of contact between two objects will increase the rate of heat transfer between them.

Establishing thermal equilibrium, using objects with similar specific heats, and reducing the time of contact will not necessarily increase heat transfer between the two objects.

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why not

but

you must answer these two questions...

Was the night at the museum trilogy good?

Is JedTavius a real ship?

Answer:

UH TAHNKYOU VERY MUCH SIR UH HAVE A GOOD DAY

Explanation:

To determine the number of storage bits required in the controller memory for the twisting joint (type T) of the industrial robot, we need to calculate the repeatability, round the deviations to a reasonable precision, and then calculate the number of addressable positions based on the range of the joint and the chosen accuracy level.

First, let's calculate the repeatability of the joint. Given that the range of rotation is 322°, the repeatability can be calculated as 6 times the standard deviation. Since the standard deviation is a measure of how spread out the data is, multiplying it by 6 ensures that the accuracy of the joint is as close as possible to, but less than, its repeatability.
Next, let's analyze the given data. The 10 samples of deviations from the commanded angles are: 0.176, 0.04, -0.345, 0.079, 0.309, -0.004, -0.102, 0.12, 0.075, and 0.1.
To calculate the standard deviation of these deviations, we need to find the mean and then calculate the differences from the mean. Squaring these differences and taking the average will give us the variance, which we can then take the square root of to obtain the standard deviation.

After calculating the standard deviation, we multiply it by 6 to obtain the repeatability.
Now, to determine the number of storage bits required, we need to consider the accuracy of the joint. The accuracy depends on the precision required for representing the deviations. Assuming a reasonable level of precision, we can round the deviations to, for example, 3 decimal places.
Finally, the number of storage bits required in the controller memory can be calculated by multiplying the range of the joint (322°) by the accuracy (e.g., 0.001°, considering 3 decimal places). This will give us the number of addressable positions, which can be represented by the required number of storage bits.

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Answer:

the correct one is 3

Explanation:

The magnetic force is described by the expression

         F = q v x B

The bold indicate vectors, q is the charge, v the velocity and B the magnetic induction

This expression can be written in scalar form

        F = q v B sin θ

where θ is the angle between velocity and induction.

The direction of the force is perpendicular to the vectors.

When revising this expression the force depends on the electric charge, the speed of the particle and the induction of the magnetic field

therefore, checking the possible answers, the correct one is 3

Answer:

1) Superposition results in adding the two waves together. Constructive interference is when two waves superimpose and the resulting wave has a higher amplitude than the previous waves. Destructive interference is when two waves superimpose and cancel each other out, leading to a lower amplitude.

I'm sorry thats all I can help with

Answer:

Turn off the second drip and then add a barrier with one slit. What do you observe on the right side of the wall? What do you observe on the left side of the wall? From a physics perspective, explain your observations of what is happening on both sides of the barrier.

Explanation:

 The speed and amplitude of the waves are affected when hitting the barrier. The two waves reflect off the barrier and they travel in opposite directions.

Hey there!

A pulley is a "system" that has a rope attached to carry heavy materials off the ground. Once you pull the rope, the heavy item will be carried.

Hope this helps!

Have a great day!

Sin is the vertical component. So multiply sin 30 and 14. BOOM! You got the answer.

\( \sin(30) \times 14 \: = 7\)

The kinetic energy of the ice when it reaches the ground is 1176 J, and its speed is approximately 3.23 m/s.

To find the kinetic energy of the ice when it reaches the ground, use the equation:

Kinetic Energy (KE) = 1/2 × mass × velocity²

Given:

Mass (m) = 15.0 kg

Height (h) = 8.00 m

To calculate the potential energy of the ice at the starting position, use the equation:

Potential Energy (PE) = mass × gravity × height

where gravity (g) = approximately 9.8 m/s².

PE = 15.0 kg × 9.8 m/s² × 8.00 m

= 1176 J

Since there is no air resistance, all the potential energy is converted into kinetic energy when the ice reaches the ground. Therefore, the kinetic energy is equal to the potential energy:

KE = 1176 J

To find the speed of the ice when it reaches the ground, use the equation:

Potential Energy (PE) = Kinetic Energy (KE)

PE = 1/2 × mass × velocity²

1176 J = 1/2 × 15.0 kg × velocity²

Rearranging the equation to solve for velocity:

velocity² = (1176 J × 2) / (15.0 kg)

velocity² = 156.8 J / 15.0 kg

velocity² = 10.45 m²/s²

Taking the square root of both sides to solve for velocity:

velocity = √(10.45 m²/s²)

velocity ≈ 3.23 m/s

Therefore, the kinetic energy of the ice when it reaches the ground is 1176 J, and its speed is approximately 3.23 m/s.

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Two forces act on the brick: the force of gravity pulling it downward and the force exerted by your hand pushing it upward during acceleration.

When you are accelerating the brick upward, there are two forces acting on it. The first force is the force of gravity, pulling the brick downward towards the Earth. This force is proportional to the mass of the brick. The second force is the force exerted by your hand, pushing the brick upward to counteract gravity and accelerate it. This force is applied through contact with your hand and is equal in magnitude but opposite in direction to the force of gravity. These two forces, gravity pulling downward and your hand pushing upward, are the only forces acting on the brick during the upward acceleration.

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By 0.27m, the kitchen is farther than the hallway. Because Kim's home's hallway is 4.63 metres long. The distance of her kitchen is 0.0049 kilometres. The distance is same in any velocity.

Distance is measured numerically or sporadically qualitatively. far apart certain things or points are. Distance in physics or common language can refer to a physical length or an assumption based on other factors. Purposes In disciplines that study human behaviour, such the social sciences, qualitative measurements are frequently used. The rate of change in an object's position relative to a frame of reference is called velocity, and it depends on time.

4.9m is equal to 0.0049 km;

the difference is equal to 4.9 - 4.63;

and the difference is equal to 0.27.

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Answer:

With regards to NASA's ambition to send humans to Mars, is an encouraging idea.  Also, the aim of sending food supply by unmanned spacecraft before the 2030 project though noble is filled with constraints and design problems.

For the constraints,

1. The spacecraft could be lost on the space before it reaches its destination being Mars. This is because, lack of communication between the control unit on earth and the spacecraft signify it being lost forever.

2. The food supply is bound to spoil on Mars since it would be stored unrefrigerated. This is as a result of the actions of the micro organisms acting on them.

For the criteria for the engineering design problem:

1. The distance between earth and Mars is very far

2. Not factoring in the preservation method into the unmanned aircraft.

Explanation:

A race car is moving at a constant speed around a track. The race car is changing its velocity as the direction of motion changes.

The primary indicator of an object's position and speed is its velocity. It is the distance that an object travels in one unit of time. The displacement of the item in one unit of time is the definition of velocity.

The rate at which a body's displacement changes in relation to time is known as its velocity. Velocity is a vector quantity with both magnitude and direction. SI unit of velocity is meter/second.

As the race car is moving at a constant speed around a track, the magnitude of velocity remains same but during race it may changes its direction of motion, that is why, velocity of it, which depends on both magnitude and direction, may changes.

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The discharge of the stream is approximately 3,801,600 ft³/min, 107,701.6 m³/min, and 0.508 MGD.

To calculate the discharge of the stream, we can use the formula:

Discharge = Cross-sectional area × Velocity

First, let's calculate the cross-sectional area:

Cross-sectional area = Width × Depth

Given that the width is 1 mile (5280 ft) and the depth is 80 ft, we have:

Cross-sectional area = 5280 ft × 80 ft = 422,400 ft²

Next, we need to convert the velocity from ft/min to ft³/min. Since the velocity is given as 9 ft/min, the discharge velocity is equal to the cross-sectional area multiplied by the velocity:

Discharge velocity = Cross-sectional area × Velocity = 422,400 ft² × 9 ft/min = 3,801,600 ft³/min

To convert the discharge to other units, we can use the following conversions:

1 m³ = 35.3147 ft³

1 million gallons = 3,068.88 acre-feet

Now, let's perform the conversions:

Discharge in m³/min = Discharge velocity / 35.3147 = 3,801,600 ft³/min / 35.3147 = 107,701.6 m³/min

Discharge in million-gallon/day (MGD) = (Discharge velocity / 7.481) / 1,000,000 = (3,801,600 ft³/min / 7.481) / 1,000,000 = 0.508 MGD

Therefore, the discharge of the stream is approximately 3,801,600 ft³/min, 107,701.6 m³/min, and 0.508 MGD.

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Answer:

3 meters

Explanation:

add up dum boi

Answer:

Work is measured joules.

Answer:

Joule

Explanation:

Since energy and work are two sides of the same coin, they are measured with the same units. The SI unit of energy/work is the joule (J), named for English physicist James Prescott Joule (1818 - 1889).

The voltage across the capacitor is VC = 0 - j0.003654V.

The circuit given on the right is a series circuit comprising a resistor R, an inductor L, and a capacitor C. The applied voltage is given as δV = δVmax sin(ωt) where δVmax = 51V and ω = 15rad/s. The values of L, R and C are 0.6H, 25Ω and 0.011F respectively.

The complex impedance of the circuit is given as follows;

Z = R + jωL - j/ωC = 25 + j(15)(0.6) - j(1/15)(0.011)

= 25 + j9 - j0.000733=

25 + j8.99927Ω

The amplitude of the current in the circuit is given as;

I = V/Z where V is the amplitude of the applied voltage.

Substituting the values of V and Z;

I = δVmax/Z= 51/(25 + j8.99927)

The current in the circuit is thus;

I = 1.661 - j1.8355A.

The voltage drop across each component can be obtained by multiplying the amplitude of the current by the impedance of each component. The voltage across the resistor is given as;

VR = IR = (1.661)(25) = 41.525V

The voltage across the inductor is given as;

VL = jωLI = j(15)(0.6)(1.661) = j14.98V

The voltage across the capacitor is given as;

VC = -j(1/ωC)I = -j(1/15)(0.011)(1.661)

= -j0.003654V

The voltage across the capacitor is thus;

VC = 0 - j0.003654V.

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After watching the Ted Talk, there were still a few questions that I had about supermassive black holes. Firstly, I wanted to know more about the event horizon and what it exactly entails. Although the speaker briefly touched upon this subject, I would have appreciated a more in-depth explanation. Additionally, I would have liked to know more about the role of supermassive black holes in the universe.

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Answer: Hope This Helps!

Explanation:

1: Newton’s first law of motion can explain how a magician pulls a tablecloth from underneath the dishes. A negligible horizontal force is applied during the process. As per Newton’s first law of motion, the dishes and glasses remain in their state of motion (rest); as a result, they remain undisturbed.

2: Newton's First Law of Motion is defined as "An object at rest and an object in motion will stay in motion with the same speed and in the same direction unless acted upon by an unbalanced force."In soccer, when the soccer ball is in the soccer field and it is not moving, that means that it is at rest and there is no force acting upon it. When there is a person that is ready to play soccer and wants to kick the ball and play, then the unbalanced force would be the power from the person's foot.

3: Newtons third law can explain, as the cannonball is pushed forwards by the expanding high-pressure gases created by the exploding gunpowder, it pushes back on these gases. The gases push back on the cannon itself, causing it to roll backwards. Alternative answer: the cannon pushes forward on the cannonball. the reaction force is the cannonball pushing backwards on the cannon.

Answer:

Amplitude: The maximum displacement of a Vibrating body from its central position.

Time period : The time taken by one complete vibration to pass a given point.

Frequency: The number of waves that pass a point in a particular amount of time.

Answer:

\( \fbox{ \sf{ \: Below \: in \: bold}}\)

Explanation:

\( \star{ \: \: \underline{ \sf{Amplitude}}} : \) The maximum displacement of a particle from its mean position in a wave is called amplitude of a wave. It occurs at crest and trough in a transverse wave and at compression and rarefaction in a longitudinal wave. It's SI unit is ' m '.

\( \star{ \underline{ \: \sf{ \: Time \: period}}} : \) The time taken by a wave to travel complete one cycle of a complete wave is called time period. It's unit is second. For example : if a sound wave takes two seconds to complete one cycle , it's time period is two seconds.

\( \star{ \underline{ \sf{ \: \: Frequency}}} : \) The number of complete waves , set up in a medium in one second is called frequency of the wave. The SI unit of frequency is hertz ( Hz ). For example , if a sound wave completes 15 compressions and 15 rarefactions in one second , it's frequency is 15 Hz. Kilohertz ( KHz ) and megahertz ( MHz ) are the higher units of frequency.

Hope I helped!

Best regards! :D

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At a distance above the Earth's surface of 3 times the Earth's radius, the acceleration due to Earth's gravity is approximately 1.23 m/s².

Distance above the Earth's surface of 3 times the Earth's radius, the distance from the center of the Earth is:

d = 4 * R

where R is the radius of the Earth.

The acceleration due to gravity at this distance can be calculated using the formula:

a = G * M / d²

where G is the gravitational constant,

M is the mass of the Earth, and

d is the distance from the center of the Earth.

Substituting the values, we get:

a = G * M / (4*R)²

where G = 6.67 × 10⁻¹¹ Nm²/kg² and M = 5.97 × 10²⁴ kg.

Substituting these values, we get:

a = 1.23 m/s²

Therefore, the acceleration due to Earth's gravity at a distance above the Earth's surface of 3 times the Earth's radius is approximately 1.23 m/s².

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The ratio of the three circles they draw is equal to the distances from the stations to the epicenter.

Scientists use triangulation to find the epicenter of an earthquake. If seismic data are collected from at least three different locations, their intersection can be used to determine the epicenter. Each earthquake is recorded by numerous seismometers placed in different directions.

The epicenter is the point on the surface directly above the earthquake. A seismic station uses seismometer recordings to detect earthquakes. Determining the epicenter of an earthquake requires records from three separate seismic stations. Triangulation is a method of uniquely identifying earthquakes using distance information determined from three seismic stations.

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Answer:

The answer is

Explanation:

The momentum of an object when given it's mass and velocity can be found by using the formula

From the question

velocity = 2.2 m/s

mass = 72 kg

The momentum is

momentum = 2.2 × 72

We have the final answer as

Hope this helps you

“There is no centre of the universe! According to the standard theories of cosmology, the universe started with a "Big Bang" about 14 thousand million years ago and has been expanding ever since. Yet there is no centre to the expansion; it is the same everywhere”.

Answer:

There is no center of the universe.

Explanation:

According to scientists, the universe started with a "Big Bang" millions of years ago and has been expanding ever since.

A sled sliding on a flat, icy surface with a constant velocity is best described by Newton first law for object in motion.

It should be noted that Newton has three different laws and each has a close relationship in everyday life with a force that can be calculated using the formula. Sir Isaac Newton discovered this theory, the three parts of the law are very influential on the force of a moving object.

As Newton's law itself is a law of motion which forms the basis of dynamics by formulating a force against the effect of motion on a particular object. This formula became known as Newton's 1st, 2nd and 3rd law. Because of his services which were considered very noble, Newton was honored with the title of Sir Isaac Newton.

When the resultant force acting on an object with a composition equal to zero, the object which was initially at rest will always remain at rest. Meanwhile, an object that has been moving in a straight line from the beginning, will always continue to move in a straight line at a constant speed.

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If we increased the magnitude of the magnetic field The radius would decrease.

Magnitude in physics is basically "distance or quantity," so it represents the relative or absolute size, direction, or speed of an item. It is employed to describe something's size or scope. Magnitude in economics generally refers to a size or quantity.

The total amount of forces exerted on an item is referred to as the magnitude of force in physics. The intensity of the force increases when all of the forces are pulling in the same direction. As forces are exerted on an item from different angles, the agency's strength reduces.

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